Harrow-tooth holder



(No Model.)

, WIS. LAWRENCE.

HARROW TOOTH HOLDER.

No. 379,018.. A Patented Mar. 6, 1888.

Inwnhni I B, Fig. 1.

UNITED STATES PATENT OFFICE.

WILLIAMS. LAWRENCE, OF KALAMAZOO, MICHIGAN.

HARROW-TOOTH HOLDER.

SPECIFICATION forming part of Letters Patent No. 379,018, dated March 6, 1888.

Application led November lt, 1887. Serial No. 255,290. (No model.)

To LZZ whom 2lb may concern:

Be it known that I, WILLIAM S. LAWRENCE, a citizen ofthe United States, residing at Kalamazoo, county of Kalamazoo, State of Michigan, have invented anew and useful Harrow- Tooth Holder, of which the following is a specification.

This invention has for its object certain improvements in harrow-tooth holders, substan tially as below described and claimed.

In the drawings forming a part of this specification, Figures l and 2 are side elevations, with parts in section on the dotted line 1 1 in Fig. 3; Fig. 3, a'section on line 2 2 in Fig. 4; Fig. 4, aplan of lettered details in Fig. 2, looking on under side; and Fig. 5, a perspective of a lettered detail, below described.

Referring to the letters marked on the draw'- ings, D D are the crossed beams of an ordinary loat-harrow frame. The binding clip or plate A is shaped longitudinally to conform to the curvature of the shank of the tooth B, Fig. l. It is bent upward and inward at each side, and thence flanged laterallyT each way, and fils against the under side of the beam. Said iiangese e, Fig. 3, are. held by the same bolts, E, which bolt the crossed beams together; but, ofcourse, if employed in harrowsin which the beams are not crossed, the bolts would only serve to attach the holder to said beam.

The detachable seat C, Fig. 5, is curved 1ongitudinally on the bottom to tit the concave of the curved portion of the shank of the tooth This seat has a hollowed-out portion or recess, S, on each side. rlhe seat iits against the beam, and the shoulders o of the The paris Gland A are so constructed that they come well below the barrow-beam, and thus hold the shank of the tooth below the beam.

Of course the holder may be shaped to clamp a straight shank of a tooth or share and the seat C may be a shell, as here shown, or solid.

Having thus described my invention, what I claim, and desire to secure, is-

1. The combination,with a harrow tooth and frame, of the seat having the sides hollowed out, the binder having the bent sides with shoulders iitting in the hollow portion ofsaid seat, and the securing-bolts, substantially as set forth.

2. The combination of a harrow beam and tooth, a detachable block constituting a seat for the tooth, a binding-clip having the bent sides engaging the sides of the seat, so as to bind-it t0 the beam, and the securing-bolts, substantially as set forth.

In testimony of the foregoing I have hereunto subscribed my name iu presence of two witnesses.

XVM. S. LAWRENCE.

Witnesses; y

W. B. SwAErwoUT, G. D. B. HALL.- 

